Measurement systems analysis for the determination of volume resistivity and polarisation indexes

Abstract

Volume resistivity is one of basic material properties determined for electrical insulating materials. In many cases, the measurement process can affect the accuracy of the measured data. Therefore, this paper analyzes the measurement process while measuring this parameter. A necessary step to perform the analysis is the analysis of the variability that may arise in the whole measurement process. A controlled experiment is then designed to investigate the factors assumed to influence the measurement result based on this analysis. This controlled experiment is followed by experiment evaluation, results analysis, and a suggestion of possible process or organizational changes that can be made to the measurement system to improve the monitoring of material properties using this diagnostic method. The tests performed showed an expected result: the shorting book and the electrostatic bracelet affect the measured value of the volume resistivity but every parameter to a different degree.